Single-Cell Peripheral Immunoprofiling of Lewy Body Disease in a Multi-site Cohort
Phongpreecha, T.; Mathi, K.; Cholerton, B.; Fox, E. J.; Espinosa, C.; Hwang, L.-J. L.; Sigal, N.; Gajera, C.; Berson, E.; Perna, A.; Xie, F.; Shu, C.-H.; Hazra, D.; Reincke, M.; Chung, P.; Channappa, D.; Dunn, J.; Kipp, L. B.; Poston, K. L.; Montine, K. S.; Maecker, H. T.; Aghaeepour, N.; Montine, T. J.
Show abstract
Studies implicated peripheral organs involvement in the development of Lewy body disease (LBD), a spectrum of neurodegenerative diagnoses that include Parkinsons Disease (PD) without or with dementia (PDD) and dementia with Lewy bodies (DLB). This study characterized peripheral immune responses unique to LBD at single-cell resolution. Peripheral mononuclear cell (PBMC) samples were collected from sites across the U.S. The diagnosis groups comprise healthy controls (HC, n=164), LBD (n=132), Alzheimers disease dementia (ADD, n=98), other neurodegenerative disease controls (NDC, n=21), and immune disease controls (IDC, n=14). PBMCs were activated with three stimulants, stained by surface and intracellular signal markers, and analyzed by flow cytometry, generating 1,184 immune features. Our model classified LBD from HC with an AUROC of 0.90{+/-}0.06. The same model distinguished LBD from ADD, NDC, IDC, or other common conditions associated with LBD. Model predictions were driven by pPLC{gamma}2, p38, and pSTAT5 signals from specific cell populations and activations.
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